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incoherent

[in-koh-heer-uh nt, -her-] /ˌɪn koʊˈhɪər ənt, -ˈhɛr-/
adjective
1.
without logical or meaningful connection; disjointed; rambling:
an incoherent sentence.
2.
characterized by such thought or language, as a person:
incoherent with rage.
3.
not coherent or cohering:
an incoherent mixture.
4.
lacking physical cohesion; loose:
incoherent dust.
5.
lacking unity or harmony of elements:
an incoherent public.
6.
lacking congruity of parts; uncoordinated.
7.
different or incompatible by nature, as things.
8.
Physics. (of a wave) having a low degree of coherence.
Compare coherent (def 4).
Origin of incoherent
1620-1630
1620-30; in-3 + coherent
Related forms
incoherently, adverb
Synonyms
1. confused, irrational, muddled.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for incoherent
Contemporary Examples
Historical Examples
  • I had many a broken sleep inside the Yarmouth mail, and many an incoherent dream of all these things.

  • Fragments of his life formed the subject of the words, incoherent and disconnected.

    Louisiana Lou William West Winter
  • What a multitude of incoherent thoughts and recollections crowded upon my mind in that moment of time!

    The Island Home Richard Archer
  • But before his gaze Franklin relaxed into an incoherent muttering.

    The World Beyond Raymond King Cummings
  • He muttered some incoherent apology for his condition, and took my arm.

British Dictionary definitions for incoherent

incoherent

/ˌɪnkəʊˈhɪərənt/
adjective
1.
lacking in clarity or organization; disordered
2.
unable to express oneself clearly; inarticulate
3.
(physics) (of two or more waves) having the same frequency but not the same phase: incoherent light
Derived Forms
incoherence, incoherency, incoherentness, noun
incoherently, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for incoherent
adj.

1620s, from in- (1) "not, opposite of" + coherent. Related: Incoherently.

Online Etymology Dictionary, © 2010 Douglas Harper
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15
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